Door-operating mechanism



Dec. 10, 1929. s. B. HASELTINE DOOR QPERATING MECHANISM 2 Sheets- Sheet1 Filed June 10, 1926 s. B. HASELTINE 1,738,702

DOOR OPERATING MECHANI SM 2 Sheets-Sheet 2 Filed June 10 1926 "STT'ESSTACY IB. HASELTINE, OF CHICAGO, ILLINOIS, ASSIGNOR T0 W. H. MINER,INC., 01?.

CHICAGO, ILLINOIS, ACORPORATION OF DELAWARE DOOR-OPERATINGIVIECHl-SLN'ISJMI Application filed June 10,

This invention relates to door operating mechanisms.

One object of this invention is toprovide a simple and efficientarrangement of door operating mechanism, especially adapted forrefrigerator cars, for forcing the doors to tightly closed position, forholding the same closed, and which also will be effective in startingthe door openingoperation.

Another object of the invention is to provide a mechanism of thecharacter described,

effect movement of said door in opening and closing directions.

Another object of the invention is to provide a door operating mechanismof the character described, including the reciprocable bar, and thelever with an operating extension thereon for engaging the lower keeper,and provide a connection between said bar and lever whereby uponoperation of the lever to open the door the operating extension of saidlever is retracted from its projecting position below the bottom edge ofthe door to a positionwithin the confines of said door and maintainedin'this position, when the door is opened, by the weight of thereciprocable bar, so as to leave the lower edge of the door free ofdependingobstructions to enable the same to clear the usual car loadingplatforms. i

Other objects of my invention will more clearly appear from thedescription and claims hereinafter following.

In*the drawings, forming apart of this specification, Fig. '1 is asideelevation of a portion of a refrigerator-wear showing my improvements inconnection therewith. Fig. 2

tomary insulation or packing is employed between the meeting edges ofthe doors themselves and between the doors and the door frame. The doors11 and 12 are mounted for swinging movement about vertical axes, be-

ing supported by suitable hinges 1313.

As shown, the improved door operating mechanismcomprises broadly areoiprocable bar A; upper and lower keepers BB; and an actuatingmechanism C.

The operatingbar A preferably is in the formof a flat member of a lengthcorresponding substantiallyto the-longitudinal extent of the door, theupper end of said member being provided with a lateral extension 14,which in conjunction with the end portion of the member provides aninclined cam face 15, while the inner face of the extension is disposedsubstantially parallel with the outer face and provides a cam surface16, the cam faces 15 and 16 being adapted to cooperate with the upperkeeper B. The barA is mounted for-longitudinal sliding movement by meansof two part, spaced, guide brackets 17-17, which permit slight lateralswinging of the bar A in a direction substantially parallel to the faceof the door.

The upper keeper B is secured by suitable bolts to the door frameadjacent the top edge of the door 12 in line withthe upper end of thebar A. The upper keeper is provided with a front wall, the inner surfaceof which provides a cam face 18 adapted to coast with outer cam face15011 the upper end of the bar A. Said housing is also provided at oneside with an inclined cam surface 19 adapted to ooaet with the inner camsurface of theex tension 15 on the upper end of the member A. The camsurfaces 18. and 19 of said upper p as hereinafterreferred to.

keeper extend outwardly from the plane of the door frame and aredisposed in a vertical direction.

The lower keeper B is secured to the door frame adjacentthe lower edgeof the door 12, and includes a back wall 20- secured to the frame bysuitable bolts, and is provided with a bottom wall 21 and outer wall 22,the walls of the keeper being arranged to provide parallelspac'ed camsurfaces which define a cam slot 23 asbest shown in Fig. 3, said camslot being inclined outwardly from the door frame, and opening in adirection toward the forward edge of the door 12, said cam slot beingadapted for the reception of the operating extension upon the actuatingmeans 0 The left hand portion of the lower keeper B isextended as shownin Fig. 1, beyond the edge of the door '12 and has pivotaily mountedthereon a latch member 24 adapted to coact with the plate25 secured tothe door 11 adjacent the lower corner of the free edge thereof. Thelatch serves to retain the door 11 in position when closed.

'The actuating means C comprise a lever having means for engagement withthe lower keeper B and having a Connection with the bar A for rec,rocating the same. Said means include a bracket having a base plate 26secured to the left lower corner of the door suitable belts, and a frontplate 27 se- 7 to the door and overhanging the base ':l front platebeing provided with tegial spacer 28 which has a reduced ion 29 adaptedto fit into an appropriate *s in the base plate 26. A lever 31 isprovided having an opening fitting over the pacer 28 which forms thepivotal mounting therefor, and said lever has formed thereon a boss 32which spaces the lever outwardly fromthe. plate 26 of the bracket. A-securing bolt is extended through the front plate, the, lever, baseplate, and door, as shown. The head of the lever at a point in line withthe bar A, and at one side of the pivotal connection of the lever to thebracket has an car 33, which is pivot-ally connected to the lower end ofthe bar A. The lever 31 is also provided with an operating arm 34extending at a rightangle with the body portion of the lever and whichis suitablyformed so, as to engage the cam surfaces provided by thecam'slot 23 in the lower keeper B, The handle of the lever 31 is adapted tobe secured in posltion by locking and sealing mechan1sm'35.

In operation,assuming the doors to be closed as illustrated in fulllines in l lgrl, and it is desired to open the door, the lever 31 isfirst released fromthe locking. means 35, after-Which the same is swungin a clockwise direction, or upwardly, which results .in'

downward reciprocation of the bar A with a consequent travel of theupper endof'the bar over the vertical guide surfaces of the upper keeperB, and during this action the integral extension 34: on the lever 31traverses the horizontally arranged surfaces of the cam slot 23" of thelower keeper, the combined action of the bar and operating extensioneffecting movement of thedoor 12 in an opening di ection, and it shouldbe noted that the weight of the bar A bearing upon the head of he leverat one side of the pivotal connection thereof with the door, maintainsthe operating portion 34 of the lever in a position above the lower edgeof the door where the same will not interfere with a loading platform.When the door 12 has been thus forced partly open to clear theinsulation, the same maybe easily swung to fully opened position. Thelatch 2 may be then disconnected and the door 11 swung to fully openedposition. V

When it is desired to close the doors, the door 11 is first swung nearlyclosed, and the po tion that the upper-end of the bar A is in li is withthe upper keeper B and ready to enter the same, which also positions thedoor so that the operating portion 84L ofthe lever is also in positionto enter the cam slot 23 of the lower keeper; Upon counter-clockwiseswinging of the lever 31, the bar A is forced upwardly, and the operaing portion 34 of the lever 31 entersthe lower keeper B, continuedmovement of the lever 31 causing the upper end of the bar A and theoperating portion 3 1 of the lever to traverse the cam slots of theirrespective keepers and force the door to closed position. The lever thenagain may be connected with the locking mechanism 35.

While I V have 7 herein. shown and described what It now consider thepreferred manner of carrying out the invention, the same is merelyillustrative, and I contemplateall changes and modifications that comewithin mounted on a pivot fixed to the door and pro vided with anextension adapted to engage the cam surfaces of one of saidkeeper means;and an operating bar reciprocably mounted on said door and having oneendeccentrically connected to said lever means, and having the other ofsaid ends adapted to engage the cam surfaces of said other keeper meansto effect movement of said door in opening and closing directions whensaid lever is operatedp V 2. Inadoor operating mechanism, thecom- 13obination with a door frame and a pivoted door; of an operating leverpivotally mounted on a fixed pivot on said door and having an operatingextension adapted to project beneath the lower edge of said door; a barslidably mounted on said door and pivotally connected with said levermeans on one side of said first named pivot, whereby said operatingextension is held within the confines of said door by the weight of saidbar when said door is open; and keeper means having actuating portionscooperating with said operating extension and with said bar to effectmovement of said door in opening and closing directions upon actuationof said lever means.

3. In a door operating mechanism of the character described, thecombination with a door frame and pivoted door; of operating meansincluding a rotatable member having an operating portion, and areciprocable member having an operating portion; means for impartingsimultaneous movements to said rotatable and reciprocable members; andkeeper means arranged to coact with the operating portion of saidrotatable member and with the operating portion of said reciprocablemember to efiect movement of said door in opening and closing directionsupon movement of said reciprocable and rotatable members.

4. In a structure having a door frame and a pivoted door, door operatingand locking means, said means comprising: keepers secured to the doorframe at the opposite ends 35 of the door, said keepers being providedwith cam slots; a locking bar longitudinally slidably mounted on saiddoor and having one end thereof projecting beyond the corresponding endof the door and cooperable with the adjacent keeper; a second lockingmember pivotally mounted adjacent the opposite end of said door andhaving a portion adapted to project beyond the corresponding end of thedoor and cooperate with the adjacent keeper; and means for effecting,simultaneously, reciprocation and rotation of said two locking members.I

In witness that I claim the foregoing I have hereunto subscribed my namethis 26th 50 day of May, 1926.

STACY B. HASELTINE.

